Yes, I know it's wordy. It was an example of the kind of phrasing I've seen a million times on this sort of thing, not My Superior Alternative. I considered including a shorter version too (or instead), but decided that for a quick MN post — where I'm not claiming to be putting forth suggested wording, just trying to hold the OP's example next to a more common or typical way of phrasing this kind of thing — a version which bolds the most important parts would do.
If this thread were about providing information in formats accessible to those with difficulties extracting information from large chunks of text, I'd have plenty to say about it. I'm reasonably confident I've done more pressuring and campaigning on that front than the majority of those on this thread. But the thread is about phrasing that the OP, and some others, find offensive, insulting, annoying, insensitive, or otherwise offputting, to one degree or another, not reading ability. I found it interesting to think about things like, for example, how the interpretation of the meaning "cash" affects the level of formality, which might affect whether people feel their money is being respected.
I think that the response "can you see that you can't please everyone" is a bit of a cop-out. Apart from the fact that I'm not trying to please anyone and posted because I think it's an interesting topic rather than because I have fayre leaflets to write, if I was told that my phrasing for something like this might have soured some people against my fundraising event, no matter how unreasonable I thought that offence-taking might be, I'd want to at least think about whether there was an alternative that met the same requirements but didn't put those people off. I wouldn't think "Hmm… when some random person on Mumsnet typed something phrased differently for comparison, it was too long and a bit shit — ah well, can't please everyone, so we'll stick with the one that some people found offputting." I might even decide to stick with my original phrasing.
Funny thing is, I don't even personally find it offensive 😅 I just got my interest piqued and started thinking about why some people might.